An object floats in a liquid if its density (or average density) is less than that of the liquid.In the given situation, all the four objects... View Article
An ammeter is always connected in series and a voltmeter in parallel and current always flows from the negative terminal of the battery to the... View Article
Here, total resistance of the circuit = 2R+3R+R = 6RTotal emf = EHence, total current in the circuit = E/6RTherefore, voltage across 2R resistor... View Article
Over a long distance, earths’ surface will be curved and since TV signals travel in straight line television broad cast signals cannot be... View Article
There are 3 significant figures in measured mass whereas there are only 2 significant figures in measured volume. Hence density should be... View Article
The Sun has been radiating an enormous amount of energy at the present rate for nearly 5 billion years and will continue radiating at that rate... View Article
Speed of light in a vacuum is 3 x 108 m/s The speed of light in a vacuum is 186, 282 miles per second. The first person to discover the speed... View Article
Let the distance between cliff and child be d m. Then, total distance traveled by the sound = 2d, Total time taken = 6 sThen, velocity of sound =... View Article
A ray of light passing through centre of curvature of a spherical mirror is reflected back along the same path, i.e., through the centre of... View Article
The size of the image formed by the convex mirror is always smaller than the size of the object irrespective of the position of the object.... View Article
We know that an electron is negatively charged and force is always opposite to the direction of electric field. So the when the force acts along... View Article